The Duo X2 GS is not only exceptionally easy to install, but it also houses 2x 512kb Bios's (the same as the legendary Xecuter 2's)!
This is excellent becuase it means that the modchip can work in any console:

Bank 0 for v1.0-v1.5
Bank 1 for v1.6!

Need to reflash? Easy! Unlike the old, un-reliable, 'incompatible with everything' Aladdin Modchips you find other modders using, the Duo X2 GS has been built to be easily reflashed. All new versions of Evolution X carry the code needed to re-program the SST chip in the Duo X2 GS. So Re-flashing is Simple!

All chips include Header Pin, Socket, v1.6 Rebuild PCB and approx. 1m of Kynar Wire (AWG. 30)

Product Features
- One chip for all version:
- v1.0, v1.1, v1.2, v1.3, v1.4, v1.5 and v1.6/v1.6B)
- Dual Bios feature (2 x 512KB)
- Easy to disable for xbl
- Run Debug Executables
- No-patch hack 1
- No-patch hack 2
- Permanent eject trick hack
- Macrovision Off
- IGR (depends on chosen bios)
- Supports 137+GB Hard disk (F and G drive)
- Auto detect EvoX Dashboard
- Flash upgradable.

(3 months Warranty)